you will probably notice a difference in the audio quality today ,and that's because i recorded this show on my mp3 player .i wanted to try it out and see how it would work out .anyway todays show is my thoughts on using and building a solar dehydrator. i also talk about making a solar pre heater for your water heater,and solar hot water collector for supplemental heating of your home or outbuildings. i didnt have any notes when i did todays show so i may have skipped some things and i will probably do a more in depth show in these topics in the future .